Home / 8,979.89-12,392.30-5,000.99

Finding the Fourth Proportional to 8,979.89, 12,392.30 and 5,000.99

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Solution

The fourth proportional to 8,979.89, 12,392.30 and 5,000.99 is: 6,901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.89 : 12,392.30 = 5,000.99 : x
  2. Step 2: Convert to fraction form
    8,979.89/12,392.30 = 5,000.99/x
  3. Step 3: Cross multiply
    8,979.89x = 12,392.30 × 5,000.99
  4. Step 4: Simplify right side
    8,979.89x = 61,973,743.37
  5. Step 5: Solve for x
    x = 61,973,743.37/8,979.89
  6. Step 6: Final answer
    x = 6,901.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.